Finding the Fourth Proportional to 1,132.52, 1,561.82 and 712.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,132.52 : 1,561.82 = 712.31 : x
2. Step 2: Convert to fraction form
   1,132.52/1,561.82 = 712.31/x
3. Step 3: Cross multiply
   1,132.52x = 1,561.82 × 712.31
4. Step 4: Simplify right side
   1,132.52x = 1,112,488.63
5. Step 5: Solve for x
   x = 1,112,488.63/1,132.52
6. Step 6: Final answer
   x = 982.32